求3.14×78+0.314×0.78+314×0.22+31.4的简便算法,

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求3.14×78+0.314×0.78+314×0.22+31.4的简便算法,求3.14×78+0.314×0.78+314×0.22+31.4的简便算法,求3.14×78+0.314×0.78+31

求3.14×78+0.314×0.78+314×0.22+31.4的简便算法,
求3.14×78+0.314×0.78+314×0.22+31.4的简便算法,

求3.14×78+0.314×0.78+314×0.22+31.4的简便算法,
3.14×78+0.314×0.78+314×0.22+31.4 =3.14*78+3.14*0.078+3.14*22+3.14*10 =(78+0.078+22+10)3.14=345.64492